The first thing I remembered was that I am not alone. Besides my colleagues at SEHN, we have all of you. No one can make a big impact alone. Those of us who are committed to social change function best in collaboration with allies and colleagues who have different pieces of the puzzle.

SEHN's piece of the puzzle is institutional change—the institutions that structure our lives: government, universities, the law, medicine, or the food system. SEHN’s work is influencing three kinds of deep cultural and institutional change taking place now. The changes are in

How we define the problem. So much good work has focused on changing one chemical, one product, or one factory at a time. And, as we know, there is always a new struggle around the corner. SEHN is now leading a movement to define the problem as it really is—our actions combine to create more stress than ecosystems, communities, and human bodies can tolerate.

We are changing the story of environmental health from chemical-by-chemical to an ecological model over the lifespan. Ted Schettler has synthesized the extensive science showing how social stressors, diet, and toxic chemicals interact to diminish health across the arc of life. The work of Ted and his colleagues in environmental health has changed medical school curricula and influenced the way we think about cancer, Alzheimer's, and learning disabilities. See why in this fascinating lecture on environmental health over a lifespan.

Finding new solutions. We are forging decision-making structures that focus on reducing total impacts, reducing each impact, and moving away from the system of evaluating each impact independently to see if it is justified or causes an unacceptable problem all on its own—the system that got us where we are today.

We are all deeply involved in national and state legislation to change chemical policy and require green chemistry. SEHN is on the front lines, whether it means leading a stroller brigade to a US senator’s office, as Katie Silberman did recently, or helping California regulators figure out how to implement visionary new laws, which Joe Guth does both on behalf of NGOs and as a member of CalEPA's Green Ribbon Science Panel.

Joe Guth and I are working with law schools and lawyers to introduce new cumulative impact, precautionary principle, and future generation laws and regulations into public policy. Several law schools use our writing as part of their curriculum. Other law schools are creating legal research teams of professors and students to promote changes in law influenced by SEHN's work.

Our vision—like yours—is that future generations will inherit a whole and healthy world. It is time to name this vision and take it very seriously. We refuse to leave our descendents a degraded, lonely planet. We can be their voice now and embrace our sacred responsibility to become good ancestors.

I have been working with governments and lawyers to create new policies for mines and contaminated sites that will be hazardous for 10,000 generations. Yes, you read that right! We are leaving messes that are toxic or radioactive to generations so far beyond the 7th generation we can't even count. The jolt of that insight has galvanized SEHN to mount a campaign for the rights of future generations. Stay tuned as this campaign unfolds.

The problems often seem insurmountable, the work is hard, and money is tight. But I sleep better when I remember that our work is making a difference and changing the culture, even in hospitals and law schools.

We are all in this together. We have many allies, both individuals and organizations, inside government and way outside of it in the communities where we all live. If we make a difference, so can you.

One way is to support the work of SEHN. Your dollars help us change the world. Your support this holiday season makes it more likely that future generations will have a healthy world.